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nvme-fabrics: allow user to pass in nr_poll_queues
This argument will specify how many polling I/O queues to connect when creating the controller. These I/O queues will host I/O that is set with REQ_HIPRI. Reviewed-by: Steve Wise <swise@opengridcomputing.com> Signed-off-by: Sagi Grimberg <sagi@grimberg.me> Signed-off-by: Christoph Hellwig <hch@lst.de>
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26c682274e
commit
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2 changed files with 16 additions and 0 deletions
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@ -617,6 +617,7 @@ static const match_table_t opt_tokens = {
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{ NVMF_OPT_HDR_DIGEST, "hdr_digest" },
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{ NVMF_OPT_DATA_DIGEST, "data_digest" },
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{ NVMF_OPT_NR_WRITE_QUEUES, "nr_write_queues=%d" },
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{ NVMF_OPT_NR_POLL_QUEUES, "nr_poll_queues=%d" },
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{ NVMF_OPT_ERR, NULL }
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};
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@ -850,6 +851,18 @@ static int nvmf_parse_options(struct nvmf_ctrl_options *opts,
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}
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opts->nr_write_queues = token;
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break;
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case NVMF_OPT_NR_POLL_QUEUES:
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if (match_int(args, &token)) {
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ret = -EINVAL;
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goto out;
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}
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if (token <= 0) {
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pr_err("Invalid nr_poll_queues %d\n", token);
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ret = -EINVAL;
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goto out;
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}
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opts->nr_poll_queues = token;
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break;
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default:
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pr_warn("unknown parameter or missing value '%s' in ctrl creation request\n",
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p);
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@ -62,6 +62,7 @@ enum {
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NVMF_OPT_HDR_DIGEST = 1 << 15,
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NVMF_OPT_DATA_DIGEST = 1 << 16,
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NVMF_OPT_NR_WRITE_QUEUES = 1 << 17,
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NVMF_OPT_NR_POLL_QUEUES = 1 << 18,
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};
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/**
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@ -93,6 +94,7 @@ enum {
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* @hdr_digest: generate/verify header digest (TCP)
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* @data_digest: generate/verify data digest (TCP)
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* @nr_write_queues: number of queues for write I/O
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* @nr_poll_queues: number of queues for polling I/O
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*/
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struct nvmf_ctrl_options {
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unsigned mask;
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@ -113,6 +115,7 @@ struct nvmf_ctrl_options {
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bool hdr_digest;
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bool data_digest;
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unsigned int nr_write_queues;
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unsigned int nr_poll_queues;
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};
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/*
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